Question

While calling XslCompiledTransform.Transform() method I get this exception :

The Writer is closed or in error state.

Anyone know what it means?

Answer 1

It means that…The Writer is closed or in error state.

Show us the surrouding code. It looks like you have a StreamWriter associated with that object that has been disposed or threw an error. For example:

using( var stream = new SomeStream() )
using( var streamWriter = new StreamWriter() )
{
    someObj.SomeStreamWriter = streamWriter;
    // ...
}

// should throw an error as streamWriter
// has been disposed of by this point.
someObj.WriteToStream();